Dear
I have to "clean" a variable (eliminating ~ when is at the beginning or at the end of the variable) that occurs in this way:
active1~active2 ~ ~
active1~ ~~ ~
~active2
active3 ~active4 (it's OK)
Have you got any idea?
Thanks in advance for any help
Kind regards
This is a job for PRX functions, such as
data test;
input var $ 50.;
new_var=prxchange('s/^(~| )+|(~| )+$//io',-1,var);
cards;
active1~active2 ~ ~
active1~ ~~ ~
~active2
~~ ~active3 ~active4
;
Regards,
Haikuo
Several, try tranwrd(string,"~",""), the replace function, loop over the character array etc. Check out string functions SAS help documentation.
This is a job for PRX functions, such as
data test;
input var $ 50.;
new_var=prxchange('s/^(~| )+|(~| )+$//io',-1,var);
cards;
active1~active2 ~ ~
active1~ ~~ ~
~active2
~~ ~active3 ~active4
;
Regards,
Haikuo
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